Tying machine



L. M. HARVEY- TYING MACHINE April 2, 1935.

Fil'ed Jan. 10, 1934 5 Sheets-Sheet 1 Attorney y April 2, 1935. L. M. HARVEY TYING MACHINE 'Filed Jan; 10, 1934 5 Sh'eets-Shqt 2 April 2, 1935;

L. M. HARVEY TYING MACHINE Filed Jan. 10, 19:54

5 Sheets-Sheet 3 l ex 1 29 f, n 33 1 106 2 a 21 5 P H 3 44 43 ["4 1 i I'l d I a Il ,39 I

a I I I! 5 40 I 3 45' Inch lo; ieoMfi'am ey April 2, 1935. L. M. HARVEY 1,996,202;

I TYING MACHINE Filed Jan. 10, 1954 smug-sh et} I Inventor Zea Mlfarrqy A nomeyg Filed Jan "10, 5 Sheets-Sheet 5 lnventr Zea M Harvey Attorney 3 Patented Apr. 2, 1935 UNITED STATES TYING MACHINE Leo M. Harvey, Los Angeles, Calif.

Application January 10,

7 Claims.

This application is a. continuation in part of my co-pending application, Serial No. 680,641, filed July 15, 1933.

This invention relates to a tying machine, and 6 more particularly to a portable manually operable machine for tensioning and then tying the tensioned band about boxes, bundles or other objects.

This invention will be illustrated and described 10 in its preferred embodiment for applying flat bands to boxes, but it is to be understood that many of the novel features of'the invention are applicable to round wire tying machines, and that with slight modifications of the gripping and tying means, the machine may be adapted to apply round wire bands.

It is an object of this invention to provide a I light, portable machine which may be handily moved from one box to another, but if desired may be mounted relatively stationary and the boxes moved to the machine.

A further object is to hingedly mount the tying means upon the machine frame for movement to and from the tying position, and for utilizing this motion for actuating the band cutter and crimper, latch release and the means for actuating the first gripper to its open position.

A further object is to provide a simple and eliective means for actuating the tying means, and also for maintaining the tying means located centrally over the tie during the tying operation.

A further object is to provide the tying means with a device which will require the tying cycle to be completed before these means may be returned to their full open position for releasing the tied band.

A further object is to provide the two actuating handles with a detent latch means, whereby these handles 'will be releasably locked together to act as one unit while swinging with the tying jaws to and from tying position, but which may be released at the start of the tying operation.

A further object is to provide means operable for preventing the discharge of the band from the tie forming jaws until the tie has been fully formed.

Other objects and advantages of the invention will become apparent as the nature of thesame is more fully understood from the following description and accompanying drawings, wherein is set forth what is now considered to be a preferred embodiment. It should be understood, however, that this particular embodiment of the invention 55 is chosen principally for the purpose of exempli- 1934, Serial No. 706,059

fication, and that variations therefrom in details of construction or arrangement of the parts may accordingly be effected, and yet remain within the spirit and scope of the invention as the'same is set forth in the appended claims.

In the drawings:

Figure 1 illustrates a perspective view of the tying machine of this invention. v I

Figure 2 illustrates on enlarged scale aifrag mental sectional view of the tying means when actuated to the tying position.

Figure 3 illustrates a sectional view taken be.- tween the tying means and supporting hinge therefor, and having the major portion of the hinge broken away so as to more fully show the latching means and actuating mechanism therefor.

Figure 4 illustrates an enlarged fragmental sectional view of the first gripper.

Figure 5 illustrates a perspective view of the first gripper band gripping member.

Figure 6 illustrates a sectional view taken substantially in the plane of lines 6--6 of Fig. 4.

Figure '7 illustrates a sectional view of the invention taken between the band cutter and tying means and looking in the direction of the cutter.-

Figure 8 illustrates partially in section a view of the band tensioning means.

Figure 9 illustrates a fragmental sectional view taken substantially in the plane of line 99 of Fig. 8.

Figure 10 illustrates in perspective a view of the crimped end of the finished tie.

Figure 11 illustrates a fragmental side view of the pawl and ratchet device for preventing the release of the band from the tying jaws until it has been completely tied.

Figure 12 illustrates a front view of Fig. 11 showing the latch means for the operating handles.

The preferred organization of the features of this invention is illustrated in the drawings as disclosing a portable tying machine which may be easily and readily moved from one article to be banded to another.

In Fig. 1 the machine is illustrated as bein placed upon the cover of a box 12 at the location at which the band is to be tensioned and tied. The base or frame l3 of the machine may be of such size and shape as to be firmly and squarely 50 mounted upon the box, and thebase may be provided with appropriate, bosses and bearings for operatively supporting the band gripping, tensioning, tying and cutting means thereon.

After the machine'has been positioned at the 55 'tying location, a band I4 of suitable length may lustrated in Fig. 1. Next the band may be placed over the crimping anvil or die H, which die may be mounted upon the frame or formed integral therewith, and positioned thereon in spaced relation from the band locating horn l 6, to provide a band tying zone or space l8 into which the tying means may be moved.

This first end of the band, may be conveniently referred to as the initial lap l4a of the band and may be next placed over the first gripper anvil l9, which anvil may be formed upon the machine frame adjacent and inalignment with the crimping die, or may be formed of a separate piece (Fig. 6) and suitably fastened thereto.

Means may be provided for securely clamping the initial lap of the band upon anvil H, which means may include a gripper dog 20 having a serrated gripping surface 2| arranged to cooperate with the anvil to securely clamp the band therebetween. The gripper dog may be provided with a transverse cylindrical bore 22 of relatively large diameter, and having a portion thereof cut away or stepped, as at 23, so as to form the stop shoulders 24 and 25. The bore 22 of the. gripper dog may be nicely journaled upon the spindle 26 of the gripper dog control lever or driver 21, which lever may be provided with a transverse bore 23 of less diameter and extending through the spindle thereof in eccentric relation thereto for pivotally mounting the said lever upon the machine frame, as by means of the pivot pin 29. The lever arm 30 of the gripper driver 21 may be of such size and shape as to fit into the cutaway section 23 of the gripper dog, and may be provided with stop shoulders 3| and 32, arranged to cooperate with the stop shoulders 24 and 25 thereof. It may be noted from Fig. 4, that when driver 21 is rotated with relation to the gripper dog until the stop shoulder 3| thereof is brought into engagement with the stop shoulder 25 of the gripper dog, that the stop shoulders 32 and 24 will have been moved apart for a predetermined distance.

To facilitate the placing of the initial lap of the band within the first gripper, the gripping dog 20 may be releasably maintained in its r'etracted or open position by suitable gripper control means, which means is most clearlyillu'strated in Figs. 4, 5 and 6, wherein it maybe ob served that the gripper dog driver 2! is provided with a finger 33 adapted to ride upon the forward end 34 of the lever arm 35, which arm at the rear end thereof may be pivotally mounted upon the frame, as at 36. A forwardly extending trigger 31 may be pivotally mounted, as at 38, to the lever arm 35, and may be provided with a cam portion 39 adapted to ride upon the cam roller 40 operatively carried by the hinge member 4| indicated by broken lines in Fig. 6, as this hinge member lies just outside the plane of the sectional view of Fig. 6.

The lever arm 35 may be provided with stop shoulders 42 and .43 for limiting the travel of the stop pin 44 carried by the trigger and thereby the extent of swing of the trigger.

The hinge member 4| may be journaled upon shaft 45, and may be arranged to operatively carry the tying means, and said hinge means may be actuated about shaft 45 as a center to carry the tying means to or from the tying position.

During the swing of the hinge member while carrying the tying means from the tying position, the cam roller 40 also carried thereby will be brought into engagement with the cam surface 39 of the trigger, whereby the forward end 34 of the lever arm 35 will be lifted to the position. as illustrated in Figs. 4 and 6, to thereby rotate the gripper control lever 21 in a counter-clockwise direction as viewed in Fig. 4. The rotation of the gripper control lever will bring shoulder 3I- thereof into engagement with shoulder 25 to rotate the gripper dog into its open position, as illustrated in Figs. 4 and 6.

Adjustable spring means may be provided for yieldingly maintaining the gripper control lever in operative engagement with the forward end 34 of the lever arm 35, which spring means may include a spring weighted plunger 46 having a semi-spherical head 4! bearing in a correspondingly shaped depression formed in the gripper control lever 21, while the opposite end of the plunger may be slidably mounted in a suitable adjusting thimble 48, which thimble may be screw-threaded through the upper portion of a suitable frame bracket, as at 49. The thimble may be counterbored, as at 50, to receive one end of a suitable spring 5|, which spring may surround the plunger and act between the inner end of the counterbored section of the thimble and the head of the plunger to yieldingly urge the gripper control lever 21 to rotate in a clockwise direction, as viewed in Fig. 4.

After the initial lap Ila of the band has been placed within the first gripper, the gripping dog thereof may be released to rotate under the infiuence of the spring means for securely clamping the band therein. To release the gripper, the trigger 31 may be lifted until the cam surface 39 thereof will roll off the cam roller 40, thus removing the supporting means for the forward end 34 of the lever arm 35, whereupon due to the action of the spring means 5|, the gripper control. lever will rotate in a clockwisedirection.

The gripper dog will follow the rotation of the control lever until the serrated gripping portion thereof will engage the band, whereupon further rotation of the gripper dog will be stopped until the stop shoulder 32 of the control lever will have engaged the corresponding shoulder 24 of the gripper dog. whereupon the gripper may be further rotated into gripping engagement with the band. It may be well to note from Fig. 4, that the movement of the control lever with relation to the gripper dog will cause, due to the eccentric mounting of these parts, the gripper dog' to be thrust downwardly in the direction of the gripper anvil, and thus the band may be very tightly clamped in the gripper before or at about the same time that the stop shoulder 32 of the control lever will have reached the stop shoulder 24 of the gripper dog. This latter feature is of more importance during the'releasing operation of the gripper, as it permits the serrations to be lifted substantially out of mesh with the indentations formed thereby in the band, and thus the rotation of the gripper dog may be made more easily as the serrations thereof do not have to cut through these indentations as would be the case were the eccentric connection not provided.

Now that the initial end Ma of the band has been securely gripped in the first gripper, the remaining portion thereof may be passed under the second or movable gripper anvil as may be observed in Fig. 1, and then placed around the box l2 and to appear again as the final lap I 4b, which final lap of the band may be successively placed over the initial end of the band, carried by the horn l6, over the stationary cutter blade 52, over the serrated gripping 2| of the first gripper, and finally over the second gripper anvil .53, and securely gripped thereon by means of a gripper dog 54.

The second gripper anvil 53 may be carried by the reciprocating frame 55 (note Fig. 8) of the tensioning means. The frame 35 may be formed in the shape of a U and the gripper dog 54 may be operatively mounted between the two sides of the frame by means of the pivot pin 56.

The gripper dog 54 may have a grippingsurface eccentric to the center of rotation thereof, and also serrated whereby the greater the pull upon the band toward the right, as viewed in Figs. 1 and 8, the greater will be the gripping effect of the dog. A spring 51 may actbetween the gripper dog and frame to yieldingly maintain the gripping dog in gripping relation with the anvil. The gripper dog 54 may be provided with a thumb piece 58 for manually actuating the dog to its open position. However, if desired, means may be provided which will act to automatically swing the gripper dog to its open position, which means may include a U-shaped member 59 of such size as to straddle the gripper dog and to be journaled upon the pivot pin 56. The member 59 may be provided with a forwardly projecting portion 60 having a tapered cam surface 6i positioned to be engaged by the hand during the placing of the same in the gripper for actuating the gripper to its open position. Simultaneously with the arrival of the band at its gripping position, it passes beyond the influence of the tapered cam surface 6|, thus removing the means for supporting the gripper in its open positiomwhereupon the spring means 51 will be free to rotate the gripper dog 54 into its gripping engagement with the placed band. v

' The second gripper may be mounted for movement with relation to the frame for tensioning the band about the box, which movable mounting means may include a link 62 operatively connected at one end thereof to one end of the gripper frame 55 by means of the pivot pin 56, and at its other end to the machine frame as by a suitable pivot pin 63, while the other end of the gripper frame may be operatively connected to one of the legs 64 of the bifurcated tensioning lever 65. The tensioning lever 65 may be pivotally mounted upon the frame as by the pivot pin 66, and would normally be positioned as illustrated in full lines in Fig. 1 during the placing of the final lap 14b of the band therein, whereupon by swinging the tensioning lever toward'its broken line position, as illustrated in the same figure, the band may be tightly tensioned about the box.

Means may be provided to releasably lock the tensioning lever in its actuated position and thereby retain the tension in the band, which means may include a ratchet 61 (Fig. 8) mounted upon the machine frame, and a cooperating pawl 68 operatively carried by the tensioning lever and a spring means 69 for yieldingly urging the pawl into engagement with the ratchet. The pawl may be provided with a handle 10 for the convenience of releasing the pawl from the ratchet when it is desired to return the tensioning lever to its full line position, as illustrated in Fig. I, for the next tensioning operation. A torsional spring Il may be provided for yieldingly urging the tensioning lever to its starting position, which spring, means maybe mounted upon the pivot pin 66 and having one end connected to the frame while the other end thereof may engage the tensioning lever, as at 12. I I

Means may be provided for latching the initial and final laps of the band onto the band locating horn I6, which latching means may include a latch lever 14 (Figs. 1 and 3) pivotally mounted upon the machine frame, as at 15, and having an angular offset section I6 at the forward end thereof, adapted to latch over the two laps of the band placed over the locating horn 16 as is clearly illustrated in Figs. 1 and 3, while the rear thereof may be provided with a finger I1, against the under side of which the spring means 18 may act to yieldingly urge the latch leverinto band latching position. Means may be provided for normally retaining the latch lever in its retracted or open position and. manually operable for releasing the latch lever as soon as the two laps of the band have been placed over the horn and automatically actuated during the return swing of the tying means to return the latch 1e ver to its retracted position in substantially the same manner as the first gripper means is actuated to its open position. For these purposes a trigger I8 may be pivotally mounted upon the latch lever and provided with a cam'surface 83 arranged to be engaged by a cam roller 8! carried by the hinge member 82, whereby during the swing of the hinge member 62 to carry the tying means to its retracted position the cam roller 8| carried thereby will engage the trigger cam surface and thus lift the trigger and thereby the latch lever to its open position. To release the latch lever for movement into latching position over the bands, the trigger 19 may be manually lifted to swing the trigger cam surface free of the cam roller 6|, whereupon due to gravity and the action of the spring means 18 the latch lever will be moved into its latching position.

It is desirable but not necessary to manually release the latch lever as soon as the two laps of the band have been placed upon the horn as during the swing of the tying means into tying position, the cam roller 8| carried by the hinge member 82 will be carried out of engagement with the trigger cam surface, and thus the latch lever may be automatically closed before the tying operation, and even before the tension operation should the tying means be swung to tying position prior to the tensioning of the band.

In Fig. 3 thelatch lever and hinge member 82 are illustrated in full lines in their retracted positions, while in broken lines these parts are illus- Note that the ill) The band now having been latched and tensioned, the next operation will be the forming of I a secure tie in the overlapping portions of the initial and final laps of the band at the tying zone The particular form of tie is not a feature of this invention. and may be of any suitable style,v preferably as disclosed in my Patent No. 1,677,522,

issued July 17, 1928.

The tying means may be operatively carried by the hinge members 4| and 82, previously referred to, which hinge members may be journaled upon the shaft 45, whereby the tying means may be swung to and from the tying position.

The tying means may include, as illustrated in Figs. 1 and 2, a pair of tying jaws 86 and 81 pivotally interconnected by the pivot pin 88, and each jaw carrying one of a pair of cooperating tying dies 89 operable for-forming a. tie 90 in the placed band (note Fig. 10).

The free end of the tying jaw 86 may be bifurcated to receive between the bifurcations thereof, the actuating or operating lever 9 I while the free end of the tying jaw 81 may be bifurcated to receive between the bifurcations thereof the actuating or operating lever 92. The operating lever 9I may be pivotally connected to the tying jaw 86, as by means of the pivot pin 93, while the operating lever 92 may be similarly connected to the tying jaw 81 by means of the pivot pin 94, and, as may be most clearly observed in Fig. 2, the inner ends of these actuating levers may be connected to the cross-head 95, as by means of suitable pivot pins 96 and 91. To insure the uniform actuation of the operating levers, a sectoral gear means 98 may be formed upon the inner end of the operating lever 9I concentric with the cross-head pivot pin 96 thereof, while a corresponding and meshing sectoral gear means 99 may be formed upon the inner end of the operating lever 92 concentric with the cross-head pivot pin 91, whereby the actuation of one lever will cause an equal but opposite motion of the other lever. The free end of the operating lever 9| may be provided with a handle I00, while the operating lever 92 may be provided with a handle IIlI (note Fig. l). I

It is desirable to mount the tying means upon the hinge members 4| and 82 to permit the swinging thereof to and from the tying position, so as to move the said tying means out of the way during the band placing operation. The tying means may be pivotally mounted upon the hinge members H and 82 by means of the pivot pin 88, as is clearly shown in Fig. 1, and to maintain the tying jaws in correct tying alignment with the band the cross-head thereof may be provided with a cross-head pin I02, which pin may project from each side of the cross-head and each end thereof nicely fit into the cross-head slots I03 formed in the hinge members.

The tying means may be normally maintained in the full line position, as illustrated in Fig. 1, during the band placing operation and either prior to. or after the tension operation-may be swung to the tying position, as illustrated in broken lines in this same figure. After the band has been sufliciently tensioned, the handles I00 and IOI may be actuated to close the tying dies upon the band to form the tie therein, such as illustrated in Fig. 10. The position which the different parts of the tying means will assume at the completion of the tie-forming operation is illustrated in Fig. 2.

It is desirable to provide means for releasably latching the two operating handles 9| and 92 together, which latching means are shown in detail in Fig. 12. This latch means may include a plunger I30, slidable in bore I3I, formed in handle 92. The bore I3I may be counterbored, as at I32, to slidably receive the plunger head I33 and a compression spring I34 active between the inner end of the counterbore and that of the head to drive the rounded or pointed end I35 thereof into a registering depression I36 formed in handle 9|, while the outer end of the plunger may be provided with a stop washer I31, suitably fastened thereon, for preventing the plunger from being shoved by the spring away from the handle when the other actuating handle is moved out of en gagement therewith.

The purpose of this detent or latch is to maintain the two operating handles locked together at all times, except during the tying operation, so that should the operator take hold of handle IOI of the operating lever 92 to swing the tying unit to tying position, this lever would not swing independently of the unit, and, likewise, should the operator attempt to swing the tying unit to its retracted position by means of handle I00 and lever 9I the detent would act to cause the tying device to swing as a unit instead of allowing the lever 9I to swing independently thereof. Thus, the detent adds greatly to the convenience and rapidity with which the machine may be operated.

It sometimes happens that the operator does not operate the tying jaws 86 and 81 to their full extent by means of levers 9I and 92 and thus fails to completely and securely form the tie. To prevent such careless operation, a cycling means may be provided which will function to prevent the tying jaws from being opened sufficiently to release the band once the tying operation has been inaugurated until the tie has been completely and tightly formed. This cycling means may include a pawl I40 pivotally mounted upon the operating lever 9|, as by means of the headed screw I4I. A spring I42 may act between the upper end I43 of the pawl and the handle, while the upper end of jaw 81 may be provided with a ratchet tooth I44 positioned to be engaged in latching relation by pawl I40 at about the point at which the tying jaws close in upon the band, thus preventing the release of the band from the machine until the tie has been effectively formed. The pawl automatically releases when it swings past the release tooth I45, at which time the tie will have been effectively formed. This release of the pawl is effected by means of spring I42 which will act to swing the tooth engaging end of the pawl in a direction similar to that shown in Fig. 11, whereby the ratchet engaging end thereof will ride over the two teeth I44 and I45 during the return swing of the operating handle. It will be remembered that the two operating handles are geared together so that the control of one lever controls the action of both. Thus, the cycling pawl may be mounted upon either one of the operating levers, or, if desired, such a pawl may be mounted upon both. A greater number of ratchet teeth I44 may be provided, if desired.

Upon the completion of the tie forming operation, the handles may be returned to their broken line position, as illustrated in Fig. l, and then the entire tying means swung to the open or retracted position, as illustrated in full lines therein. The hinge member 82 may be provided with a stop shoulder I94 adapted to engage the machine frame (Fig. 3) when the tying means has reached its fully retracted position to prevent further rearward motion thereof.

It is during the rearward swing of the tying means that the cam rollers 40 and BI carried by the hinge members engage the latch and gripper means for actuating these parts to their open or retracted positions.

This rearward swing of the tying means may also be utilized for actuating the band cutting and crimping means. The band cutting and crimping means are clearly illustrated in Figs. 1 and 7, and may include the stationary cutter blade or tongue 52 and a movable cutter blade I05. The stationary cutter blade 52 may be formed of a fiat strip of tool steel of relatively thin section, and may be relatively loosely mounted in the cutter groove I06 formed in the frame, and each end of the stationary cutter blade may be provided with a locating hole. I01, through which the point I08 of the screw I09 may project for correctly locating and retaining the stationary blade within the frame groove. As may be observed from Figs. 1 and 7, the stationary blade 52 is symmetrical in all respects and, therefore, may be turned end for end or side for side in order to make possible the utilization of each of the four cutting edges thereof, whereby a single adapted to cooperate with the stationary blade for severing the final lap of the band adjacent the tie formed therein. In order to positively retain the forward end of the stationary blade in cutting relation with the shearing edge III of the movable blade, the movable blade at the forward end thereof may be provided witha depending lug H2 arranged to engage the side of thestationary blade opposed to the cutting edge thereof prior to the engagement of the shearing blade III with the band. The lug H2 may be so proportioned as to latch over the placed laps of the band and to thereby also act to retain the band. portions in correct severing and crimping positions.

The movable cutter I05, may carry a suitable spring means H3, which spring means may act to yieldingly retain the stationary cutter blade in its operative position and to permit the stationary blade to be slightly lifted during the'placing of the initial lap of the bandupon the crimping anvil. I v

The means for actuating the movable cutter blade may include a ratchet-cam wheel H4 operatively journaled upon the hinge shaft 45 and having preferably four ratchet-cam teeth. The ratchet-cam wheel may be positioned directly to the rear of the movable cutter blade and the movable blade may be so shaped as to operatively engage the wheel in such relation that the cam surface I I5 of the blade may ride over the cam surface II6 of the wheel during the rotationthereof to cause the blade to rock about its pivot pin H0 and to thus swing the shearing edge III thereof across the stationary blade and thereby sever the final lap of the band placed over the stationary blade.

The ratchet-cam wheel H4 may be rotated a quarter of a turn during the swing of the tying means from its tying to its retracted position, by providing the hinge member 4| (Fig. 7) with a pawl III adapted to engage the ratchet face H8 of one of the ratchet teeth when the tying means is moved to the tying position, and thus to rotate the ratchet-cam wheel during the return swing of the tying means to its retracted position.

A spring means I I9 may be provided for yieldingly urging the pawl H1 into operative engagement with the ratchet-cam wheel, and a stop pin I20 may be provided for limiting the swing of the pawl under the influence of said spring means The cam surface H5 of the movable cutter: blade I05 may be made removable by providing a.

hardened, but even s6?) there may be some wear between these parts which may be compensated for by providing shims of suitable thickness between the cam block and movable blade. Also, by this arrangement the action of the cutter blade-may be nicely adjusted with relation to the crimping die.

A band crimping means may be provided t crimp the cut end of the final lap Ilb of the band normal surface of the band and, thereforegwill" not catch upon other boxes when piled foneupon The cam block I2I and the ratchetcam wheel may both be made of steel andv another, or will not cut or scratch the hands of i I the person handling the strapped boxesl;

To crimp the cut end of the tie, the crimpinganvil Il may be provided with a crimping groove.

I23 (Figs. 2 and 7) positioned directly below'the shearing edge III of the movable'cutter blade.

and the movable cutte'rblade giv'ensuflicient movement to drive the cut end of the final "lap of the band together'with the adjacent portion of the initial lap thereof into the crimping groove' I23, and thus crimping the band as illustratedin" Fig. 10, as at I24. 5 g

The operation of the machine may be briefly summarized as follows: First, the machine may be positioned upon the object to be tied,'at the initial end thereof placed upon the band locating horn I6, thence between the crimping anvil I1- and the stationary cutter blade 52, then over the first gripper anvil I 0, whereupon by means of the gripper trigger 31 the first gripper may hereleased into clamping engagement with this initial lap of the band. The band may next be' passed under the second or movable gripper anvil 53 about the object to return to the machine as the final lap I 4b, which lap maybe first placed over the initial lap resting upon the locating horn I6, whereupon by means of the latch trigger 19, the latch lever 14 may be released to latchthe two laps of the band thereon, whereupon the final lap Mb may be placed over the stationary cutter blade, first gripper and then slid into the second gripper, which will automatically open and then grip the band as previously described; third, the tensioning means, which includes the second gripper, may be actuated from its retracted position, as illustrated in full lines in Fig. 1, to its broken line position, to effect the tensioning of the band about the object. The pawl 68 cooperates with the ratchet 61 to retain the tensioning lever at that point to which this lever is swung during the tensioning operation; fourth, the tying means may be swung into its tying position and by means of the'handles I00 and IM actuated to securely tie the overlapping portions of the placed band. Thereafter, the tying means may be opened and swung back to its retracted position, whereupon the cutter pawl II'I will engage androtate the ratchet-cam wheel II4to actuate the movable cutter blade, first to sever the surplus portion of the final lap of the band from the tie adjacent the end thereof, and, second, to force the cut end of the band into engagement with the adjacent portion of the initial lap of the band, and together forcing these portions of the band into the crimping groove or die I23, and to thus crimp the cut end into the depression formed in the initial lap thereof so that the cut edge of the band will lie below the normal plane of the top surface of the band. Fifth, during the swing of the tying means from .the tying toits retracted position, the cam rollers 40 and 8| will engage their respective triggers to retract the first gripper and latching lever, whereupon the machine may be removed for the next tie.

It may be noted especially in Fig. 7 that during the swing of the tying means to its tying position the movable cutter lever I will act as a pawl to prevent rotation of the ratch-cam wheel III in the counter-clockwise direction, as viewed in this figure.

From the above description, it will be appreciated that the tying operation .may be accomplished easily, quickly and effectively.

Having fullydescribed the invention, it is to be understood that the invention is not to be limited to the details herein set forth, but it is of the full scope of the appended claims.

I claim:

1. In a tying machine, a frame, a cutter tongue mounted upon the. frame, a movable cutter blade operatively mounted upon the frame in shearing relation to the cutter tongue, a crimping die mounted upon the frame below the cutter tongue, and means for actuating the movable cutter blade across the cutting edge of the cutter tongue and thereafter for actuating the movable cutter into crimping'relation with the crimping die.

2. In a tying machine, a frame, a hinge means journaled thereon, a band tying means carried by the hinge for movement to and from the tying position, a ratchet wheel operatively journaled upon the frame, a pawl carried by the hinge means, and engageable with the ratchet wheel for rotating the same during the movement of the tying means from the tying position, and a movable cutter blade having an arm engageable with the ratchet wheel for locking the same against rotation during the movement of the tying means to its tying position, and said am being arranged to be actuated by the ratchet memos wheel during the rotation thereof for actuatin the cutter blade to sever the band.

3. In a tying machine, a frame, a hinge means journaled thereon, a band tying means carried by the hinge for movement to and from the tying position, a band receiving anvil carried by the frame, a-latch means operable for latching the band upon the anvil, a trigger means operatively carried by the latch means, a cam means carried by the hinge for engaging the trigger during the movement of the tying means from the tying position for releasably retaining the latch means open, and said trigger means being operable for disengagement with the cam for thereby releasing the latch for movement into its latching position.

4. In a tying machine, a pair of pivotally connected tying Jaws, an operating lever pivotally connected to the free end of each jaw, and a cycling means operatively associated with said levers and jaws and operable for preventing the actuation of the jaws to release the band in which the tie is being formed until after the completion of the tying operation.

5. In a tying machine, a pair of pivotally connected tying jaws, an operating lever pivotally connected to the free end of each jaw, means for interconnecting said levers, and a cycling means operatively associated with said levers and jaws and operable for requiring the full actuation thereof to form a secure tie before the tie may be released therefrom.

6. In a tying machine, a pair of pivotally connected tying jaws, an operating lever pivotally connected to the free end of each jaw, a gear means carried by the adjacent end of each lever and the gear means of one lever operatively meshing with the gear means of the other lever, a crosshead operatively connecting the operating levers, and a cycling means operatively associated with said levers and jaws and operable for requiring the full actuation thereof to form ,a secure tie before the tie may be released therefrom.

7. In a tying machine, a pair of pivotally con-,

nected tying jaws, an operating lever pivotally connected to the free end of each jaw, and a latch means operatively associated with the levers for' releasably latching said levers together when said jaws have been actuated to their open position.

LEO M. HARVEY. 

